HW-RL3-LCD: RS485 Modbus
- Monitor product, interface, and temperature
with a single sensor
- 2 discrete inputs
- 1/4” resolution option (±1/8” accuracy)*
- 1/2” resolution option (±1/4“ accuracy)
- Sensor option: flex (PTFE) or rigid (316 SS)
- Multiple liquid compatibilities
- Device is fully configurable using the LCD display UI,
RS485 Modbus Interface, or the H Series Configuration Software
- Quick and easy to install
- Sensor only requires a one-time calibration
- Supports a wide temperature range
-40 ˚C to 120 ˚C (-40 ˚F to 248 ˚F)
- Highly resistant to H2S damage, scaling, and
paraffin buildup (Limited lifetime warranty,
please contact your OleumTech representative
- 9-30 Vdc power input
- Class I, Division 1 (Zone 0), Intrinsically Safe
- Click here to see level sensor accessories
OleumTech Level Sensors are Ideal for
Production Tanks | Water Tanks | SWD Locations | Separators | Condensate Tanks
Midstream Collection and Blend Tanks | Refinery Holding Tanks | Chemical Tanks | Many Others
Ultimate Level Measurement Solutions
The RS485 Resistive Tank Level Sensors by OleumTech® are part of the H Series line of high quality instruments that deliver unrivaled performance, reliability, and accuracy in hazardous locations as well as under harsh, extreme environmental conditions.
With over two decades of innovation and manufacturing expertise, OleumTech’s Resistive Level Sensors are the company’s flagship level monitoring solution that offers industry-leading 5-in-1 monitoring capabilities: product (oil), interface (water), the temperature, along with two discrete inputs for connecting to dry contact sources. The HW-RL3-LCD also has the ability to calculate and report volume and tank full percentage data.
OleumTech’s patented Resistive Level Sensors are offered in both flexible (PTFE) and rigid (316 SS) materials in various lengths.
Reliable, Scalable, and Safe
The H Series ultra-high-performance level gauging solution can communicate with any Modbus master device via RS485 Serial connection. The low-power Resistive Level Sensors can be multi-dropped up to 16 sensors. The Resistive Level Sensors are certified for use in Class I, Division 1 (Zone 0) hazardous locations and are Intrinsically Safe, making them one of the safest products in the world.
Contact your OleumTech representative to learn more about its high performance automation solutions.
Do Much More with Less
The OleumTech Resistive Level Sensor give you the ability to continuously measure product (oil), interface (water), and temperature and monitor two discrete inputs from a single instrument, eliminating the need for multiple sensors and multiple tank ports.
No Wiring Hassle
Every Resistive Level Sensor is equipped with a quick connect fitting that joins the sensor to its head without any wires for ultrafast installs and gives ability to program on or off the tanks.
Installs in Minutes
The flexible (PTFE) level sensor is only 20 inches in diameter when coiled making extremely easy to transport. Deployment cost and time can be significantly reduced by enabling just one person to perform the entire installation.
Up to 16 of these low-power level sensing instruments can be multi-dropped using a single power supply. There are multiple 3/4-inch NPT ports available on the sensor head to help you run conduit and wire with ease.
Great Peace of Mind
The OleumTech Resistive Level Sensors are Intrinsically Safe and are certified for use in Class I, Division 1 (Zone 0) hazardous locations, providing the highest level of safety under rigorous, extreme outdoor conditions.
Easy-to-Use Local Display
Easily configure the device using the local display user interface. The LCD remains always on with auto-scroll convenience for quickly capturing and reading day on site.
Rigid - 316 Stainless Steel
Resistive Level Sensors are available with the rigid 316SS option, ranging from 2 to 21 ft in lengths with multiple float options. The rigid sensor comes equipped with a 3/4-inch NPT 1-inch NPT height adjustable compression fitting.
Flexible - PTFE
The liquid level probes can be ordered with the flexible (Polytetrafluoroethylene) option, ranging from 8 to 38 ft in lengths with multiple float options. This sensor provides a 1-inch NPT height adjustable compression fitting.
Choice is Yours
You can take advantage of the 1/4-inch resolution version of the sensor with ±1/8-inch accuracy or take a more cost-effective approach by using the 1/2-inch resolution version that provides ±1/4-inch accuracy.
|Device Functionality||∙ H Series RS485 Modbus Transmitter with Support for Resistive Level Sensors|
|∙ HW-RL3-LCD: Modbus, Provides Product, Interface and Temperature Levels + 2 Discrete Inputs|
|Embedded Controller||∙ Ultra-Low Power RISC Microcontroller with Internal FLASH (Field Upgradeable)|
|Configuration||∙ Integral LCD with Push Button Interface or H Series Configuration Software v3.0.0 or later or via Modbus|
|Sensor Type||∙ Resistive Reed Switch|
|Resolution||∙ High Resolution, Depends on Sensor: 1/4" (6.4 mm) or 1/2" (12.7 mm)|
|Accuracy||∙ US: ±1/8" for 1/4" Resolution Sensor ; ±1/4" for 1/2" Resolution Sensor|
|∙ Metric: ±3.2 mm for 6.4 mm Resolution Sensor ; ±6.4 mm for 12.7 mm Resolution Sensor|
|2 Discrete Inputs||∙ Dry Contact, NPN (Sink), Debounce Filter 0 - 2000 ms (Available on HW-RL3)|
|Interface||∙ RS485 Modbus (N81 framing: No Parity, 8 Data Bits, 1 Stop Bit)|
|Baud Rate||∙ 1200-57,600 bps|
|Local LCD Display||∙ 32-Character Display (16x2 Lines) with 4 Function Keys, Always On|
|Instant Displayable Read||∙ Product / Interface / Temperature / DIN1+2 with Counts / Modbus Error Count + Modbus Status|
|Dimensions||∙ 5" (W) x 4.7" (H) x 4.4" (D) / 127 mm (W) x 119 mm (H) x 112 mm (D)|
|Package Dimensions||∙ 10.25" (W) x 14" (H) x 6.5" (D) / 260 mm (W) x 356 mm (H) x 165 mm (D)|
|Package Weight||∙ ~4.5 lbs/ 2.0 kg (Head Only)|
|Connection Fitting||∙ 3/4" NPT Female|
|Enclosure Casing Material||∙ Type 4X Aluminum; IP66|
|DC Power Input||∙ 9-30 Vdc (30 V Max)|
|Current Consumption||∙ 25 mA Peak / 1.5 mA Idle|
|Multi-Drop Max Consumption||∙ 54 mA Maximum based on 16 Sensors Multi-Dropped|
|IS Safety Protection||∙ Barrier Board (See Part Numbers under Ordering Information)|
|CERTIFICATION & COMPLIANCE|
|Safety||∙ Intrinsically Safe for Use in Hazardous Environments|
|∙ Class I, Division 1, Groups A, B, C, D T4; Ex ia IIC T4 Ga; Class I, Zone 0, AEx ia IIC T4 Ga|
|Operating Conditions||∙ Sensor: Ambient Temperature (Class I, Division 1): -40 °C to 120 °C (-40 °F to 248 °F)|
|∙ Transmitter: Ambient Temperature (Class I, Division 1): -40 °C to 70 °C (-40 °F to 158 °F)|
|∙ LCD Screen -20 °C to 70 °C (-4 °F to 158 °F)|
|∙ Transmitter: Ambient Temperature (Non-Hazardous Applications): -40 °C to 80 °C (-40 °F to 176 °F)|
|∙ Humidity: 0 to 99 %, Non-Condensing|
|Warranty||∙ 2-Year Parts and Labor|
|Country of Origin||∙ USA|
|SENSOR||RIGID: 316 Stainless Steel "SS"||FLEX: Polytetrfluoroethylene "PTFE"|
|Type||Extremely Reliable and Accurate Resistive Reed Switch Technology|
|Measurement Capabilities (3-in-1)||Product, Interface, and Temperature|
|Lengths Offered in US Units||2 to 26 ft Length in 1 ft Increments||8 to 38 ft Length in 1 ft Increments|
|Lengths Offered in Metric||0.61 to 7.9 m in 0.31 m increments||2.44 to 11.58 m in 0.31 m increments|
|Resolution and Accuracy||Option 1: 1/2" (12.7 mm) Resolution with ±1/4" ( ±6.4 mm) Accuracy (6-pin Quick Connect)|
|Option 2: 1/4" (6.4 mm) Resolution with ±1/8" (±3.2 mm) Accuracy (8-pin Quick Connect)|
|Sensor to Interface Mating Connection (No Wiring Solution)||316 SS Quick Connect: 6-pin Connection for 1/2" Resolution, 8-pin Connection for 1/4" Resolution|
|Tank Mating Connection (Adjustable Compression Fitting)||3/4" NPT Male||1" NPT Male|
|Temperature Accuracy||±1 °C|
|Anchor Weight Diameter||N/A||2.4" / 60.3 mm|
|Height of Anchor Weight||N/A||8 to 19 ft Sensor: 5"|
|20 - 28 ft Sensor: 6.75" / 29 - 38 ft Sensor: 8"|
|Coiled Diameter||N/A||20" (50.8 cm) Coiled Diameter|
|Minimum Measurement from Bottom (Deadband)||2" (50.8 mm) from Bottom||From Top of Anchor Weight|
|Pressure Rating||Float Dependent||Float Dependent|
|Sensor Only without Float(s)||569 PSI (39 Bar)||142 PSI (9.8 Bar)|
|Sensor w/ 316 SS Float - Small*||440 PSI (30 Bar)||N/A|
|Sensor w/ 316 SS Float - Large||356 PSI (24.5 Bar)||142 PSI (9.8 Bar)|
|Sensor w/ Polyvinylidene Fluoride (PVDF) Float||72.5 PSI (5 Bar)||72.5 PSI (5 Bar)|
|*316 Stainless Steel - Small, (Fx0)||Compatible Only with Rigid Sensor Length up to 7 ft|
|Product: 0.64 SG, Interface: 0.96 SG, ID 0.72" (18.3 mm), OD 2.05" (52.1 mm), H 2.71” (68.83 mm)|
|316 Stainless Steel - Large, (Fx1)||Product: 0.62 SG, Interface: 0.95 SG, ID 1.12" (28.5 +/-0.5 mm), OD 2.83" (72 mm), H 4.65” (118 +/-1 mm)|
|Polyvinylidene Fluoride (PVDF), (Fx3)||Product: 0.64 SG, Interface: 0.96 SG, ID 1.18" (30 +0.3/-0 mm), OD 2.83" (72 +/-0.25 mm), H 1.77” (45 +/-1 mm)|
|Operating Temp. Sensing Area||-40 °C to 120 °C (-40 °F to 248 °F)|
|Certifications||Class I, Division 1, Groups C, D T4; Ex ia IIB T4 Ga; Class I, Zone 0, AEx ia IIB T4 Ga|
|Device Compatibility||OleumTech WT, SM, and H Series Resistive Level Transmitters|
|Power||The Sensor is Powered by the Transmitter|
|Kit Ordering #: 1/2" Resolution with Float(s)||ZGxxxFxx||TGxxxFxx|
|Kit Ordering #: 1/4" Resolution with Float(s)||ZHxxxFxx||THxxxFxx|
|Model Numbers||∙ 1/2" Resolution (6-pin): HW5000-RL3-LCD|
|∙ 1/4" Resolution (8-pin): HW5800-RL3-LCD|
|IS Barrier Boards||∙ 12 V Kit: SX1000-B12, RS485 Module (61-6002-001) + 12 V Module (61-6003-001)|
|∙ 24 V Kit: SX1000-B24, RS485 Module (61-6002-001) + 24 V Module (61-6004-001)|
|Cables||∙ H Series Configuration Cable Kit, SX1000-CC8|
|∙ OleumTech All-in-One Cable Kit, SX1000-CC2 (For Firmware Uprading Purpose)|